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RE: Threaded couplers for rods

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Scott,

McMaster-Carr [ ww.mcmaster.com ]has coupling nuts, including coupling nuts
up to 1" with sight holes, and coupling nuts of various materials.  Their
catalog has a page of discussion of materials available including ASTM
compliance.  They have a grade 8 that they say is designed for use with
heat-treated steel, including ASTM A325, as well as nuts appropriate for use
with ordinary carbon steel rods.  They also have reducing couplers, and
right-hand/left-hand couplers for turnbuckle-type application.

They are located in Los Angeles.

Sight-hole coupling nuts can be pricey.  I sometimes require that a mark be
painted on the threaded end of each rod to be coupled at a consistent
distance from the end.  This also allows visual verification.

Nels Roselund, SE
South San Gabriel, CA
njineer(--nospam--at)att.net
-----Original Message-----
From: Scott Maxwell [mailto:smaxwell(--nospam--at)engin.umich.edu] 
Sent: Wednesday, August 10, 2005 8:56 PM
To: seaint(--nospam--at)seaint.org
Subject: Re: Threaded couplers for rods

Yep, but at least according to their literature they only have up to 7/8"
coupler (and it is not clear from their literature if that 7/8" is the
dimension of the coupler or the rod that it can handle).  I need one that
can deal with a 1" diameter rod.

Thanks,

Scott
Adrian, MI


On Wed, 10 Aug 2005, chuck utzman wrote:

> I'm fond of Simpson's CN Wbecause of the stops & "witness holes" in the
> middle--the only way to know if it's properly installed.
> Chuck Utzman, P.E.
>
> Scott Maxwell wrote:
>
> >Can any one tell me what capacity that I should use for a threaded rod
> >coupler for a 1" diameter rod?  I cannot seem to find capacities in
> >various companies catalogs.  I am assuming that it may not really matter,
> >that as long as proper material is spec'd and the coupler is long enough
> >that it will have more capacity than the rod (much like a proper nut).
If
> >so, what should the ASTM material spec be for a threaded coupler?  And
> >what about length?  I have found "standard" length ones (about 3" for a
1"
> >diameter rod) and "long" couplers (about 7" for a 1" diameter rod).
> >
> >Thanks,
> >
> >Scott
> >Adrian, MI
> >
> >
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